Working with DP groups

The following example defines a group for different data points and demonstrates filtering options.

Note:

Familiarization with the details of different data point group filtering options.

Preparations:

  1. In order to try out the different filtering options, sample data point types were used for the following examples: Motors and Valves of DPTs PUMP1 and SLIDE_VALVE1.

  2. For each data point type data points were created, three data points for a plant with 3 halls (A, B, C), three data points each for the motor data point type, for example, 1A_M_motor1 (that is, motors 1-3 for plant 1, hall A) and so on up to a total of 9 data points.

    Also data points 1A_V_valve1 and so on were created for the Valve data point type (also 9 data points).

Assuming that you wanted to display specific data points such as all motors in plant 1, hall A or all valves of the plant, you could do this as follows:

How to create a new group

  1. Open the DP-group administration panel.

  2. Click New and enter a specific group name, for example, Motor_1A with the option "Private";. This specifies that this group can only be used if you enter your user name. If you want to make the group available to everyone, select "Public".

  3. Create the Motor_1B and Motor_1C groups in the same way.

    Note:

    If the language name is empty, the current language is applied and if this is also empty, the first language whose name is not empty is applied.

  4. Click OK.

  5. The combo box now contains the new group.

You can now configure this new group using different filtering options in such a way that only all motors of plant 1 and hall 1 are shown.

Note:

See Working with the new DP selector for details on how to filter and select data point elements using the DP selector (+DP button).

How to define a data point element filter

  1. Click the +DP(T)-Filterbutton.

  2. Select the PUMP1 data point type.

  3. Enter 1A*, 1B* or 1C* as filter (what filter should be chosen depends on the group item selected earlier). In the figure below, the defined filter is 1A*.

    Note:

    Note that if you have defined an alias filter (see chapter filter by alias names), an alias name is shown in the "Alias" column.

  4. Click OK.

Your data point group definition panel now contains a table entry PUMP1 under Data point Type/Dp-group and 1A* under DP(E) filter.

You could also query all valves in the same way.

Note:

Click the "Check..." button. The list of items must contain the 9 data points of the Valve data point type for all halls in plant 1.

How to define a group filter

You can also assign groups within groups: To do so proceed as follows: Create, for example, a group called Motors_Plant1 as a main group via the New... button (see how to create a new group) and assign the groups Motor_1A, Motor_1B and Motor_1C to it.

  1. Select the Motors_Plant1 group.

  2. Click the +Groupbutton.

  3. Select Motor_1A.

  4. The "Motor_1A" group is added to the list of filters and indicated as a group by the letter "G" in the last column. Add Motors_1B and Motors_1C to the group.

When using the DP selector to select items, you can specify this filter as a filter for "Group in Group" (see DP selector).

Note:

Click the "Check" button. The list must now contain 9 items: the motors in plant 1 (3 halls) see also the figure Check group further on. Note that some filter settings count data points twice. In order to prevent this, check the group settings as follows:

How to check your group settings

  1. Click "Check".

  2. The Check Group panel opens.

  3. The list contains all items corresponding to the filter settings.

  4. Click "Duplicates".

  5. This display shows how often the items occur in the first column.

  6. If a data point occurs several times, you should modify your filters.

    Figure: Check Group ... Motors_Plant1

Note:

Note that filters are OR-linked. This means that if multiple conditions are met, the results of all filters are displayed.